Syntax error MySQL query to calculate the days between two dates from different columns but similar rows

MySQL query to calculate the days between two dates from different columns but similar rows

Let us first create a table −

mysql> create table DemoTable1471
   -> (
   -> EmployeeJoiningDate date,
   -> EmployeeRelievingDate date
   -> );
Query OK, 0 rows affected (0.57 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1471 values('2018-06-21','2018-12-21');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable1471 values('2017-01-19','2019-01-31');
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable1471 values('2015-12-31','2016-03-01');
Query OK, 1 row affected (0.11 sec)

Display all records from the table using select statement −

mysql> select * from DemoTable1471;

This will produce the following output −

+---------------------+-----------------------+
| EmployeeJoiningDate | EmployeeRelievingDate |
+---------------------+-----------------------+
| 2018-06-21          |          2018-12-21   |
| 2017-01-19          |          2019-01-31   |
| 2015-12-31          |          2016-03-01   |
+---------------------+-----------------------+
3 rows in set (0.00 sec)

Here is the query to calculate the days between two dates −

mysql> select datediff(EmployeeRelievingDate,EmployeeJoiningDate) as EmployeeWorkDays from DemoTable1471;

This will produce the following output −

+------------------+
| EmployeeWorkDays |
+------------------+
|              183 |
|              742 |
|               61 |
+------------------+
3 rows in set (0.00 sec)
Updated on: 2019-12-10T07:39:53+05:30

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